Accounting for kinematic inhomogeneity in calculations of the subcritical deflection of laminar cylindrical shells

Conclusion The range of application of kinematically homogeneous models 2 and 3 for estimating the stress-strain state of a laminar shell is limited to the class of structures, whose stiffness characteristics of the individual layers differ by one-two orders of magnitude. In this case, the shell's subcritical deflection can be computed from simplest model 1 for relatively long shells (at least for L/R 2 in the cases under consideration). In other cases, the stressstrain state of a laminar shell should be evaluated on the basis of the fracture-line hypothesis (model 4). Consideration of transverse-reduction deformations of the shell's layers does not introduce significant corrections into the results of the computation.Translated from Mekhanika Kompozitnykh Materialov, No. 2, pp. 299–304, March–April, 1987.